Senior - Software Engineer, .NET, Reactjs

We're building an internal operations platform that transform how MoMo sees and manages its core activities.This is a senior/lead individual contributor role. You will own the technical direction of a greenfield product. You work with the Product Owner to translate business intent into working software.

Mô tả công việc

• Lead end-to-end development of a complex, highly optimized web application from architecture to deployment
• Build information-dense, keyboard-first interfaces for power users (think Linear, not landing pages)
• Design and implement backend services, data models, and API layers
• Build integrations with enterprise systems
• Make technical trade-offs independently and communicate them clearly
• Write maintainable, production-quality code daily
• Shape product direction through engineering judgment, push back when designs don't work, propose alternatives when requirements are unclear

Yêu cầu công việc

High Agency

• You ship without waiting for perfect information
• You see gaps and fill them before being asked
• You own outcomes, not activity

Strong Engineering Fundamentals

• Modern React: state management, performance optimization, component architecture
• TypeScript proficiency on the frontend
• Backend proficiency with C# and ASP.NET Core: designing APIs, modeling data, writing efficient queries
• Solid understanding of relational databases (PostgreSQL preferred)
• Experience integrating with third-party APIs and handling auth, rate limits, error recovery
• You understand why things work, not just how to make them work
• You write code your teammates will thank you for

Strong Communication

• You explain technical concepts clearly to non-engineers
• You ask questions early rather than building the wrong thing
• You give and receive feedback constructively
• You document decisions so others can understand your reasoning
• You prefer "we shipped" over "I built"

Good Taste

• You have opinions on how professional software should feel
• You notice the difference between 50ms and 200ms response times
• You understand information hierarchy, what earns screen space, what doesn't
• You appreciate tools like Linear, Figma, or VS Code and can articulate why they're well-made

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Qualifications

• 3+ years building production web applications (fullstack).
• Strong TypeScript/.NET (C#) experience on both client and server.
• Proficiency with Node.js/Bun runtime.
• Experience designing and maintaining optimized DB with PostgreSQL, or similar.
• Familiarity with modern data-fetching and caching patterns
• Comfortable with Docker and CI/CD basics

Bonus points:

• TanStack ecosystem (Router, Query, Table, Form)
• Enterprise/B2B product background with complex data relationships
• Experience with Jira APIs or similar
• Experience building AI-powered features or integrating LLMs into applications
• Experience mentoring engineers or leading small teams